LATERAL LOAD CAPACITY AND DEFLECTIONS OF PURE AND WALLED FRAMES BASED ON MODELING OF MEMBERS WITH VARYING PLASTIC ZONES Elasto-plastic behavior of reinforced concrete uniformed frames (Part 1)

Abstract

In this paper, the characteristics of multi-story reinforced concrete frames subject to lateral loads are studied in consideration of the effects of elasto-plastic behavior of beams, columns and walls. Those members subject to bending moments are replaced by member-models with varying plastic zones, which have, restoring force characteristic of Tri-Linear type between bending moment and curvature. The structural behavior of the uniform frames are obtained from elasto-plastic three-moment equations and three-deflection equations. We especially described the ultimate capacity, the ductility, and the collapse mechanism of the walled frames.